#include <stdio.h>

int main() {
	int k1,k2,cache;
	printf("Input k1 and k2.\n");
	scanf("%d%d",&k1,&k2);
	cache=k2;k2=k1;k1=cache;
	printf("k1: %d\nk2: %d\n",k1,k2);
	return 0;
}